Internal-combustion engine.



. T. w. HBNDBY.

' INTERNAL coMBUsTmN ENGINE,

2 sums-sant 1.

MSW/5272@- I Jvl//fN'lo/e,

I .I /1 To/eNEx/s Patented sept 22,1908.

APPLIUAT-IOB FILED HOV. 6, 190B.

ff "nu, 899,216.

Tol all 'whom 'it may'comzcrn:

'riiOM-.is win-inner, or SAN rnANoiscocaLiFOnNiAl" INTERLIAL-QMBUSTION EFK'HLNE.l

Be it known that-I,A THOMAS W. HENDRY, s citizen of, the `United States, residing at San Francisco,'in the county of San Francisco and State of California, have invented a new and useful Internal-Combustion Engine, of

which -the following is a specification.

' This invention relates t-o internal' conibustion engines, and has lor its lprincipal object to provide a novel forni of engine of that class in which the pist-on is provided with an inlet port that is arranged to alternately open and close communication witha port leading to the crank case or other point of supply, the piston port in the present c0iistruction being arranged. to direct the explosive cliarge iii a direct streain into the cen'- trai portion of thecylnder and explosion chamber.

A further object ol the invention is to'so slia eihe'pistpii`ort and the discharge nozzle eading there 'roin as to ei'll'cctually direct the stream of explosive coni ouiid in a "ber, and preventing loss through premature straight line, axially of the exp osion chainbei,I avoiding danger of spreading of the stream until it-strikcs the head of the chamexcape through the exhaust ports.

l Withtlicse' and otherobjects. in view, as will more full-y hereinafter appear, the inverttion consists in certain novel features of construction a'ndar'rangement of parts, hereinafter fully described, illustrated in the accompany-ing drawings, and4 particularly pointed out in the appended claims, it being understood that variouschanges in the forni, proportions, size and minor details of the structure may, be made without departing from the pirit or sacriicing any of the ad-A vanta es' of the invention.

In t ie accom anying drawings :.-eF igure 1' Ais a sectional e evationof an internal coinbustion engineV constructed in accordance with `the invention. Fig. 2 a sectional plan View of t-lie same on. the line T-2 of Fig. 1. Fig. 3 is a detail perspective view of the controlling valve detached, ari-s being broken away in order to more cliearly illusltrate the construct-ion. F ig. 4 is a detail 'Oers ective view of the valve adjusting -mec ianism.

Similar numerals of referencearc employed I.to indicate corresponding parts throughout the"sercral figures ofthe drawings. The crank casing 1U is provided with'bear- Vings oflany desired type for the support a Spedcation of Letters Patent.' Y .Appiiauo'n mai November e, isos. serial No. 2.247.

niainlcrank shaft 11ywhich` is connected the trunk piston 11E-bly a suitable rod 13.

To the crank casing is secured the cylinder A1li, the explosion chamber of the latter be ,surrounded by a water jacket 15 throng A which water or other fluid maybe circulated from an inlet 16 tio a discharge..17+;

At one'side of the cy1inderis-arianged a passage l2() communicating atnits lower end with the crank casing, and at its upper'end with a port :21 wliichleads through the wall of the cylinder, and this passage 20h85 aninlet port 22 that is in communication with the carbureter or other source of gas supply,

a charge being drawn in through this port en I the compression or out stroke o f the piston,

and being delivered into the crank casing,

vwhile on the workii'ig stroke of the piston the charge drawn into the crank casing'will becoin rcssed and forced through this passage to t lie port 21, and from thence to the ey inder.

` In order to direct the explosive charges into the central portion of the cylinder and thus sweep out the products of combustion resulting from an explosion of a previous stroke, the piston is provided with a passage 23, opening at one side of the piston and arranged to communicate with the.. cylinder port 21. The passage 23 terminates 1n a dischargenozzle 24 disposed at the axis of the piston and arranged to direct the volume of the incoming charge in the axial'line oftheVv cylinder and the explosion chamber.

In devices of this general class I have found it impracticablc to effectively direct the stream of gas satisfactorily in perfectly straiglit'lines with the axis of the cylinder. Where the assage in the piston curves fromthe inlet end to the nozzle( the incoming stream of gas will hug the curved wallfor alshort distance and then will rebound and he deflected out of the axial line and will strike against one or the other side of the cylinder. ln carrying out the resent inveiitionLthis difliculty is overcome y ein--v ploying' a pocket 23"in alinement with the inlet end of the passage 23, and in advance of the nozzle, the bottom of the ocket bulging or concnving away from, andp being disposed beyond that wall of the nozzle distant from the inlet end of the passage. As a result of this construction the incoming stream of gas passing through the straight portiony of the passage will strike againstthe concavtd oroutwardly bulged wall of the l Patented Sept. 22, 1908.-

I.- i g pocket, and the stream will rebound to a certaineitent against thev inflow, so that its force will be somewhat-checked, casing the volume of` gas to issue from the no z'zle in straight lines, in the direet'axis of 'thecylim n der,1 striking againstrthe eentral'portion -of the head v-of the 'explosion chamber and thence being deflected downwardl along-4 side thel side walls of the cylinder to ofte out the burned gases of the previously exploded. l charge. It will, furthermore, Vbe noted that the diseharge'end -of the nozzle is somewhat above theloviermost edges of the discharge e so that'said valve will neverbe exposcdto the action ofthe products of combustion, and no deposits. of carbon can form to prevent movement of the valve. l That wall ofthe cylinder op iosite the in let )ort 21 isv provided with a large number 'of iseharge ports '26, all of which com1nuni' cate with an arcuate chamber 28 from which leads the main exhaust 29.v T hese discharge port-s afford am )le opportunit)v for the escape of practically all ofthe products `of conihustion, so that there will be no a )preciable residue left over to reduce the quality of the fresh charge.

In Athe upper portion of the passage 20 which constitutes a valve chamber is ar- A ranged a slide valve 30, the body portion of the' valve being substantially rectangular in form and being rovided at that end nearest the main cranl shaft with a projecting fiange 31 that extends through the port 21, and the inner faceof this flange is sha ed to i conforlnexactly to the bore of the cy inder,

Vso that, there can be or other residue no passage of gas bethis valve 1s moved in the direction of the crank shaft', the effective area of the port 2i tween .the-'piston and the valve. When will be decreased, and when moved in theopposite'direetion the effective area of tta port willbe increased. Y

In the outer face o'f the valve 30, is'an elon- 'gated slot 32 arranged for the reception o f a pin 33 that projects from a disk 34, said disk being carrier by a suitable rock shaft 35 extending through a stuffing box 36. When y the shaft is turned, the pin-33 will ride inthe groove 32, -and will move the valve to alter the effective area of the port. In the present instance the shaft is shown as earryi a rocker arm 37 which may form a lever or turning the valve, or the rocker'arxn may be connect-ed to a suitable valve operating mechanism of an) desired type.

With a valve and valve operatir mechanism constructed in accordance wit 1 this invention the engine is at all times under perect control, and its operation may be regu'- latedat any speed.

I claim:-

In an internal combustion engine, a cylinf` der having discharge ports, and an inlet port,- a piston having a vlaterally extended straight wall passage arranged to eommunieatewith the inlet port, the piston passage terminating I in a shortnozzle at the center of the piston head inthe line of the axis of said p1ston,the

wall of the saidpassage opposed to and dis` i.

tant from said port being provided with a- -curved pocket concaving or bulging away from said inlet pingement oft ie charge thereagainstand by whichy the force of the stream of incoming gas is broken and the stream is thence deflected l through the noz'zle in' a straight line followin the axis ofthe cylinder. n'testimony that I claim 'the foregoing as my own, I have hereto affixed my signature in the presence o f. two witnesses. v THOMASW. HENDRY. Witnesses:

ALEXANDER DUEAU,

GEORGE DIJE'AU.

ort and providing for the iin f Y 

